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Verbal·Expression of Ideas·Transitions
hard
Scientists studying asteroid deflection have focused on secondary objects such as S/2015 (190208), a moonlet orbiting the near-Earth asteroid 2006 AQ. In 2022 NASA intentionally crashed a probe into just such an object, successfully altering its orbit. Scientists have yet to demonstrate,        that 2006 AQ and other primary objects would be similarly affected.
Which choice completes the text with the most logical transition?
A
for example,
B
admittedly,
C
moreover,
D
likewise,